한반도 지형이 대상수렴운의 생성에 미치는 영향에 관한 WRF 민감도 실험
WRF Sensitivity Experiments on the Formation of the Convergent Cloud
1
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
This study was conducted to perform various sensitivity experiments using WRF(Weather Research and Forecasting) model in order to determine the effects of terrains of theKorean Peninsula and the land-sea thermal contrast on the formation and development of theconvergent cloud band for the cases of 1 February 2012. The sensitivity experiments consist ofthe following five ones: CNTL experiment (control experiment), and TMBT experiment,BDMT experiment and ALL experiment that set the terrain altitude of Taeback Mountains andNorthern mountain complex as zero, respectively, and the altitude of the above-mentioned twomountains as zero, and LANDSEA experiment that set to change the Korean Peninsula into seain order to find out the land-sea thermal contrast effect. These experiment results showed that acold air current stemming from the Siberian high pressure met the group of northern mountainswith high topography altitude and was separated into two air currents. These two separatedair currents met each other again on the Middle and Northern East Sea, downstream ofthe group of northern mountains and converged finally, creating the convergent cloud band. And these experiments suggested that the convergent cloud band located on the Middle andNorthern East Sea, and the cloud band lying on the southern East sea to the coastal waters ofthe Japanese Island facing the East Sea, were generated and developed by different dynamicalmechanisms. Also it was found that the topography of Taeback Mountains created a warm airadvection region due to temperature rise by adiabatic compression near the coastal waters ofYeongdong Region, downstream of the mountains. In conclusion, these experiment resultsclearly showed that the most essential factor having an effect on the generation and developmentof the convergent cloud band was the topography effect of the northern mountain complex,and that the land-sea thermal contrast effect was insignificant.
Abstract
This study was conducted to perform various sensitivity experiments using WRF(Weather Research and Forecasting) model in order to determine the effects of terrains of theKorean Peninsula and the land-sea thermal contrast on the formation and development of theconvergent cloud band for the cases of 1 February 2012. The sensitivity experiments consist ofthe following five ones: CNTL experiment (control experiment), and TMBT experiment,BDMT experiment and ALL experiment that set the terrain altitude of Taeback Mountains andNorthern mountain complex as zero, respectively, and the altitude of the above-mentioned twomountains as zero, and LANDSEA experiment that set to change the Korean Peninsula into seain order to find out the land-sea thermal contrast effect. These experiment results showed that acold air current stemming from the Siberian high pressure met the group of northern mountainswith high topography altitude and was separated into two air currents. These two separatedair currents met each other again on the Middle and Northern East Sea, downstream ofthe group of northern mountains and converged finally, creating the convergent cloud band. And these experiments suggested that the convergent cloud band located on the Middle andNorthern East Sea, and the cloud band lying on the southern East sea to the coastal waters ofthe Japanese Island facing the East Sea, were generated and developed by different dynamicalmechanisms. Also it was found that the topography of Taeback Mountains created a warm airadvection region due to temperature rise by adiabatic compression near the coastal waters ofYeongdong Region, downstream of the mountains. In conclusion, these experiment resultsclearly showed that the most essential factor having an effect on the generation and developmentof the convergent cloud band was the topography effect of the northern mountain complex,and that the land-sea thermal contrast effect was insignificant.
참고문헌 (25)
- Asai, T., "A numerical study of the air-mass transformation over the Japan Sea in winter", J. Japan Meteor. Soc, 43, pp.1~15 (1965)
- Asai, T., "Meso-scale features of heavy snowfalls in Japan Sea coastal regions of Japan", Tenki, 35, pp.156~161 (1988)
- Dudhia, J., "Numerical study of convection observed during the winter monsoon experiment using a mesoscale two-dimensional model", J. Atmos. Sci, 46, pp.3077~3107 (1989)
- Eito, H., "The structure and formation mechanism of transversal cloud bands associated with the Japan-Sea polar-airmass convergence zone", J. Japan Meteor. Soc, 88, pp.625~648 (2010)
- Geleyn, J. -F., "On a simple, parameter-free partition between moistening and precipitation in the Kuo scheme", Mon. Wea. Rev, 113, pp.405~407 (1985)
- 홍성유, "The WRF Single-Moment 6-Class Microphysics Scheme (WSM6)", 한국기상학회지, 42(2), pp.129~151 (2006), 한국기상학회
- Hozumi, K., "The cloud structure of convergent cloud bands over the Japan Sea in winter monsoon period", J. Meteor. Soc. Japan, 62, pp.522~533 (1984)
- Kain, J. S., "The Kain-Fritsch convective parameterization : An update", J. Appl. Meteor, 43, pp.170~181 (2004)
- 김유진, "겨울철 동해상의 대상수렴운과 그 주위의 대류운에 관한 WRF 수치모의 연구", 대기, 24(1), pp.49~68 (2014), 한국기상학회
- Kurihara, Y., "A scheme of moist convective adjustment", Mon. Wea. Rev, 101, pp.547~553 (1973)
- Magono, C., "A study on the snowfall in the winter monsoon season in Hokkaido with special reference to low land snowfall", J. Fac. Sci, 2, pp.287~308 (1966)
- Masayuki, M., "A case study of snowstorm gusts and blowing", drifting snow, 1993, pp.18, 142~148
- Mlawer, E. J., "Radiative transfer for inhomogeneous atmospheres : RRTM, a validated correlated-k model for the longwave", J. Geophys. Res, 102, pp.16663~16682 (1997)
- Nagata, M., "On the structure of a convergent cloud band over the Japan Sea in winter; A prediction experiments", J. Japan Meteor. Soc, 65, pp.871~883 (1987)
- Nagata, M., "Further numerical study on the formation of the convergent cloud band over the Japan Sea in winter", J. Japan Meteor. Soc, 69, pp.419~428 (1991)
- Nagata, M., "On the formation of a convergent cloud band over the Japan Sea in winter; A numerical experiments", J. Japan Meteor. Soc, 64, pp.841~855 (1986)
- Ohigashi, T., "Shift and intensification processes of the Japan-Sea polar-airmass convergence zone associated with the passage of a mid-tropospheric cold core", J. Japan Meteor. Soc, 85, pp.633~662 (2007)
- Ohtake, H., "The formation mechanism of a thick cloud band over the northern part of the Sea of Japan during cold air outbreaks", J. Japan Meteor. Soc, 87, pp.289~306 (2009)
- Satoh, S., "Airborne Multi-Parameter Precipitation Radar(CAMPR)observation of wind fields in snow clouds", J. Commun. Res. Lab, 49, pp.55~66 (2002)
- Skamarock, W. C., "A description of the advanced research WRF version 3", pp.125~ (2008), NCAR T
- Uemura, H., "Mesoscale disturbances causing a heavy snowfall over the coastal area of the Sea of Japan", Proceedings of an International Symposium, Secretariat of the World Meteorological Organization, pp.17~21 (1981)
- Yagi, S., "Large scale snow clouds with roll axes roughly perpenduclar to the direction of winter monsoon burst: Observational studies of convective cloud roll axes and some theoretical consideration", Tenki, 32, pp.27~39 (1985)
- Yagi, S., "Convergent and cloud’ and ‘Cb-Cu line’ over Japan Sea affected by topographic features in the coast of the Asian continent", J. Japan Meteor. Soc., 33, pp.453~465 (1986)
- Yoshinori, Y., "Kinematic and thermo dynamical structures of Longitudinal-Mode snow bands over the Sea of Japan during cold-air outbreaks part I : Snow bands in large vertical shear environment in the band-transverse direction", J. Japan Meteor. Soc, 88, pp.673~718 (2010)
- Yoshizaki, M., "An overview of the field experiment"Winter Mesoscale Convective Systems(MCSs)over the Japan Sea in 2001", and comparisons of the cold-air outbreak case(14 January)between analysis and a non-hydrostatic cloud-resolving model", J. Japan Meteor. Soc, 82, pp.1365~1387 (2004)